800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800

Waterdrop Canada
16 Reviews
Regular price $1,299.00
Sale price $1,299.00 Regular price
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  • Key Feature
    • [800 GPD High Capacity] Waterdrop G3P800 RO system filters 800 gallons of water per day with a fast flow, producing one cup of water in just 6 seconds.
    • [3:1 pure to drain ratio] The tankless RO system G3P800 uses only one cup of wastewater to produce three cups of filtered water, thanks to advanced water dispensing technology.
    • [UV Sterilizing Light] Equipped with a long-lasting LED lamp that automatically turns on when water flows by, and has a sterilization rate of up to 99.9%.
    • [9-stage filtration] Tested by official third-party laboratory (SGS), through 9-stage filtration, G3P800 can effectively reduce PFAS, fluoride, heavy metals like lead, chromium, arsenic, iron, radium and calcium, salts like nitrate and chloride as well as large particles.
    • [Trusted Certification] Certified against NSF/ANSI Standard 58 for TDS reduction and NSF 372 certified for lead-free material. See WD-G3P800 RO system test results for more.
    • [Smart Faucet] Get real-time TDS levels and water quality with the system's smart faucet.
    • [Stylish Design] Sleek and tankless, the G3P800 RO system saves up to 70% of under-sink space while consistently producing pure water.
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Estimated Delivery Time


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4-10 Business Days


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3-6 Business Days

$5.99(Free on order over $200)

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2-5 Business Days


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We need 24h to 48h to prepare your order, most of the packages will be shipped out within 24 hours except weekends and holidays.

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30-Day Return ×
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Thank you for shopping at Waterdrop. We appreciate your decision to purchase our products and aim to ensure a rewarding experience throughout your exploration, evaluation, and purchase process.

Order Cancellations:

If you wish to cancel an order, please contact our customer service team.

1. If you contact us within 24 hours of purchase:

Since most orders ship the same day, kindly email us at contact or call us at (888)-352-3558 within 24 hours of placing the order. There will be no cancellation fees for standard items canceled before shipment. If the package has already been shipped, we will provide a prepaid label for return, and once we receive the package from you, we will issue a refund.

2. If you contact us after 24 hours of purchase:

  • In such cases, you will need to bear the shipping fee if the package is already shipped (subject to our system status, not the order status).
  • The product must be damage-free, packed in the original packaging we sent to you, and returned with the original receipt of purchase.
  • We will process your refund after receiving the package.

30-day Risk-free Return Policy:

  • You are eligible to return any item* within 30 days of receipt.
  • All returned items must be disassembled and repackaged as they were originally received.
  • The 30-day risk-free return policy applies to all item*.
  • No restocking fee will be charged, but customers are responsible for the return shipping cost.
  • Please note that the 30-day risk-free return policy is only valid for orders* within the continental United States.

Return after 30 Days of Receipt:

  • You may still return any item after 30 days of receipt.
  • In this case, customers are responsible for the return shipping cost. The total cost of shipping will be deducted from your refund.
  • All returned items must be disassembled and repackaged as they were originally received.
  • A 10% restocking fee will be applied for all returned products.

1-year Warranty:

Enjoy peace of mind and confidence in your purchase with our 1-year warranty, backed by lifetime technical support.

If you receive a damaged item and wish to file a claim, please email with your order information and a picture of the damaged or incorrect product. We are eager to assist you.

For products that become defective during the warranty period due to a quality issue, rather than your own breakage or misuse, we can accept a free return, provide free repair service, or issue a new replacement.

Exchange Policy:

1. Defective Products:

If you receive a product with quality issues or damages, please contact our customer service team within 30 days of receipt. We will provide you with a free exchange service. Please provide order information and photos of the damaged product when contacting our customer service team for better assistance.

2. Non-Quality Issues:

If you wish to exchange a product for non-quality-related reasons, please note the following:

  • The product must be within 30 days of purchase and unused.
  • The product must be returned in its original packaging, along with the original purchase receipt.
  • You will be responsible for the re-shipping costs.
  • Please note that the exchange policy is only applicable to orders made on the official

How to Return a Product?

If you would like to return a product, please follow these guidelines:

Step 1: Contact our customer service team before returning a product. We will respond with return instructions within 24 hours.

How to contact us:


Toll-free Tel: (888)-352-3558

Step 2: Prepare the package after receiving confirmation from the customer service team, and please note the following requirements:

  • Include the order number in the package. You can print out the order detail page or leave a note inside the package.
  • Ensure the package contains the original receipt of purchase.
  • Return the product in the original packaging we provided.
  • The product must be damage-free (this does not apply to defective products, as damage will void the refund).

Step 3: Contact our customer service and provide your return tracking number. We will track the package and process your refund within 5 working days after receiving and inspecting the package.

General Information for All Returns:

  • You are responsible for shipping the products to the return address provided.
  • Returned items will undergo inspection before issuing a refund.
  • Refunds will be processed within 5 working days after the item has been inspected, and it may take 4-7 days to be reflected in your credit card statement.
  • We highly recommend using a traceable and insurable shipping method for your return. We are not responsible for returns lost or damaged in transit, and you will need to file a shipping claim.
  • Please note that orders made via 3rd-party sellers, including Amazon, are not eligible for our return policy.
  • All returned items must be disassembled and repackaged as they were originally received. Items returned in a condition other than "like new" will be subject to a 10% restocking fee to cover repairs or part replacement. The restocking fee will be deducted from your refund.

Return Address:

Ecolife Technologies, Inc.

1951 S Lynx Pl,

Ontario, CA 91761

United States

Tel: 888-352-3558

Price Match Policy:

At Waterdrop, we highly value our customers' shopping experience. That's why we offer a 30-day price match guarantee. If you happen to notice a price reduction on the item you purchased at within 30 days of your purchase, you are eligible to claim a price-match refund. To request a refund, please contact us at We are here to assist you promptly.

Note: This Waterdrop price-change refund policy only applies to items shipped and sold by If you're buying from a different vendor, you'll need to contact that seller if the price drops.

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800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800

Regular price $1,299.00
Sale price $1,299.00 Regular price
Size (L*W*H)
Feed water temperature
41-100℉/ 5-38℃
Feed water pressure
14.5-87 psi/ 0.1-0.6 MPa
Feed water requirement
Municipal tap water
Max daily production rate
800 GPD
What types of water filters are available commercially?
Reverse Osmosis Water Filter
Osmosis is when water passes through a semi-permeable membrane from a less concentrated saline solution towards a more concentrated one. Reverse osmosis, on the contrary, sees water move in the opposite direction under hydrostatic pressure (applied by a pump).
While most of the water passes through the membrane, the dissolved salts, bacteria, and other harmful substances do not. As a result, the water that comes out of the reverse osmosis system usually has 95% to 99% less total dissolved solids (TDS) than the feedwater, i.e., the water that entered into the process initially.
–Low cost
–Improves water quality, taste, and odor
–Filters down to the lowest micron
–Wastes more water
The Waterdrop G3 800GPD reverse osmosis system with uv light produces the purest water with a high bacteria reduction rate. It has an advanced water production technology that makes three cups of purified water with only one cup of wastewater going down the drain. Also, this system has an additional UV sterilizer that kills up to 99.9% of bacteria in water, delivering a better purification performance. It is an excellent water filter for businesses with large capacities – you get up to 800 gallons of pure water every day. Now you can stop worrying about running out of water.

What kind of harmful substances does the Waterdrop G3P800 water filter remove?

The RO system comes with an efficient 3-filter setup, alongside seven layers of RO membrane. Therefore, it is effective against all impurities larger than 0.001 microns, such as heavy metals, harmful chemicals, viruses, bacteria, and more.

Is UV sterilize necessary for reverse osmosis system?

Yes, it is. Reverse osmosis system is designed to remove over 90% of contaminants from your tap water by forcing the water particles through tiny pores in the reverse osmosis membrane. However, bacteria that isn’t intercepted by RO membrane will still grow in internal waterway and even faucet. UV sterilizer can perfectly solve this problem because it can filter out up to 99.9% bacteria in water. So, it is best to combine UV disinfection with water filtration for the purest drinking water.

Do I need to replace the UV lamp regularly?

No, it is not. You can use the lamp for up to 50 years or more. It uses an advanced LED chip with little or no maintenance requirements – a huge upgrade from the traditional mercury sterilizer.

Dose Waterdrop G3P800 RO system waste a lot of water?

No, it does not. The reverse osmosis water system is equipped with cutting-edge water-saving technology that guarantees a minimum drain ratio of 3:1. Therefore, for every three cups of pure water you get, only 1 cup of wastewater is produced. This is the highest water-saving capability you will find in reverse osmosis water filters.

Can Waterdrop G3P800 RO system be used for commercial?

Yes, you can. The 800 GDP filtration capacity of the filter in this reverse osmosis with uv light means it can conveniently meet the water needs for large households and small businesses like clinics, restaurants, gyms, cafes, and others.

Is the Waterdrop G3P800 reverse osmosis pump noisy?

Yes, it does. The pump in this reverse osmosis water filter works silently; you will hardly hear any noise.

Do I need plumbing services to install the reverse osmosis system?

No, you don’t. The installation process is quite straightforward.

Is this reverse osmosis water filter system unit suitable for well water?

No, you cannot. The complicated position of well water makes it unsuitable for this system. We recommend having a basic water filter to remove the large particles in your well water before sending it to this RO system.

Can I use our own faucet?

No, you cannot. Your original kitchen faucet may not be compatible with the system. Therefore, we have included a dedicated faucet in this reverse osmosis water system.
Hear it Straight From Our Pros and Users
How the Waterdrop G3 P800 is Changing the Game
Experience Unmatched Pure Water with Waterdrop G3P800!
Waterdrop: Trusted Whole House Water Purification Expert.
NSF/ANSI 58 & 372 Certified
Trusted Secure
SGS & CSA Tested
Outstanidng Quality
Trusted Materials
Levels Up With Improved Materials
Levels Up With Improved Materials
Levels Up With Improved Materials
Levels Up With Improved Materials
Levels Up With Improved Materials
Levels Up With Improved Materials
Levels Up With Improved Materials
Levels Up With Improved Materials Levels Up With Improved Materials
Levels Up With Improved MaterialsLevels Up With Improved Materials
Levels Up With Improved Materials Levels Up With Improved Materials
CF filter
CF Filter for Waterdrop G3P800 & G3 Reverse Osmosis System
  • Pre-sediment and carbon block. Superior 3-in-1 composite filter.
  • Provides up to 6 months or 550 gallons of clean water.
  • Simple replacement: Takes only 3 seconds and just a twist to change the filter.
Total price: $49.99
Total price: $49.99
WD-G3-N3CB Filter
WD-G3-N3CB Filter for waterdrop G3P800 & G3 Reverse Osmosis System
  • Superior coconut shell activated carbon block with a smaller pore size.
  • Provides up to 12 months or 1,100 gallons of clean water.
  • 3-second replacement: Takes only a twist to change the filter.
Total price: $44.99
Total price: $44.99
WD-G3P800-N2RO Filter
WD-G3P800-N2RO Filter for Waterdrop G3P800 Reverse Osmosis Systems
  • Breakthrough water-saving technology achieves 3:1 low drain ratio.
  • Replace filter in 3 seconds only, saving time and effort.
  • The recommended replacement cycle is no more than 24 months.
Total price: $179.00
Total price: $179.00
Remineralization Filter
Remineralization Filter for All Series Waterdrop Reverse Osmosis Systems-Waterdrop MNR35
  • An excellent add-on Remineralization filter adopts 18 natural materials to restore minerals.
  • Saves 8300 single-used bottles and $12600 spent on bottled mineral water.
  • Compatible with RO water system, undersink filtration systems and refrigerator.
Total price: $49.99
Total price: $49.99
CF & CB Filters
CF & CB Filters for G3P800 RO System, 1-YEAR COMBO
  • Waterdrop WD-G3P800-W Replacement Filters 1-Year Combo.
  • Pack of 2 WD-G3-N1CF Filters and 1 WD-G3-N3CB Filter.
  • It could help you save money by purchasing two CF filters and one CB filter in one kit together rather than individually.
Total price: $139.00
Total price: $139.00
CF & CB Filters and Remineralization Filter
CF & CB Filters and Remineralization Filter for G3P800 RO System, 1-YEAR COMBO
  • The water filter kit provides up to 1-year of clean water for your family.
  • Pack of 2 CF Filters, 1 CB Filter, and 1 Remineralization Filter.
  • It could help you save money by purchasing 1-Year Combo Replacement Filters in one kit together rather than individually.
Total price: $189.00
Total price: $189.00
*Some of the reviews are synchronized from WaterdropDirect Store
Customer Reviews
4.8 Based on 16 Reviews
5 ★
4 ★
3 ★
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Customer Photos
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Filter Reviews:
Lesley P.
Canada Canada

Great little on-demand space-saving RO!

I love that I can easily service this RO myself, without tools. The indicator lights make it easy to know when it's time to buy and change filters. Another bonus is that it is on-demand, so I can fill up the pasta pot to boil noodles and still have endless water. We do have a well, so we also have an additional whole house pre-filter to remove large sediment. Another bonus, the Waterdrop takes up less space than a traditional RO. Tech Support was 5-star! I changed the CF filter yesterday and had an issue with water pressure after the filter change. We spoke with a patient woman at Waterdrop tech support for about 30 minutes and she helped us to resolve the issue. We are happy to be back up and running. Thank you, Waterdrop!

Andrew M.
Canada Canada

Best purchase of the year!

After using it daily for more than 2 moths and taking manual TDS readings 2x a day for the first 2 weeks i am very happy with my purchase. Here are some points that i really like: - TDS Reduction: My tap water TDS fluctuate from 150 - 280 and the TDS of this filter fluctuate as well. When the tap water is around 150 the filter can take it down to 4 - 5 and when it is in 280 the filter takes it to 10 - 13. So it reduce the TDS by >95%. - The integrated TDS reader: it is very accurate, but if you install the remineralization filter like i did you should expect to see 16 - 23 more in an external TDS reader and even higher if the water have been sitting for a while in the minerals filter. - High Flow: We drink a lot of water and the high flow is really appreciated, my wife and i both consume from 5 - 7L and we use it for other things too like the espresso machine and washing vegetables so an approximate daily use is around 15L / day and you save a lot of time compared to other products with slower flow. - Auto Flush: it automatically flush after 5 minutes and when it have been idle for a long time so you always get fresh water. - Water taste and PH: the water taste good, neutral but without the remineralization filter it will taste dry and empty so i highly recommend it. The pH is neutral too 7 - 7.2 and with the remineralization it go up to 7.9 which is great. - Size: it is very compact and well designed, it feels like a an Apple product jejeje. - Installation: i hired someone to install it but it took 2hrs to get it working so maybe it is not easy but not extremely hard either. So far this has been a great investment and hope it last.

Dave T.
Canada Canada

Does not disappoint

I chose the Waterdrop G3P800 for its specified ability to provide fast and consistent filtered water. I wanted consistency with TDS and I didn’t want to wait 5 minutes to fill up my coffee pot. I have had the unit installed for 3 days and so far it has not disappointed on any front. -Installation: It was straight forward and pretty easy to install. The unit needs a water feed, water drainage with a provided saddle valve, and the installation of the dispenser. I did have to drill a hole in my sink to install the dispenser. If you have to do this, go get a step bit for your drill. It makes the installation a breeze. The dispenser comes with with the 1/4 tubing preinstalled and will need to be cut to install the UV sterilizing light. If you chose the remineralizer package, or purchased is separately, that will be installed before the UV sterilizer. The whole install too me approximately 2 hours all said and done, including clean up. -Output: Since the installation, the dispenser has shown between 13 to 10 ppm TDS. I did a test of my own with my TDR and it was showing 19. I don't know what kind of margin for error you can expect on these sensors, but I think it was reasonable. My water pre-filter was 315 ppm, so I am very happy with the results. The best part is I get clean water quickly without a lot of waiting. -Overall: Overall I would definitely recommend this unit. I am happy I spent the extra money on the G3P800 versus the GPD600 I was considering. Sometimes it is better to spend a little more up front and get a better product. Hopefully the quality persists and I can update this review in 6 months with more positive news.

WaterdropCanada 800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800 ReviewWaterdropCanada 800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800 ReviewWaterdropCanada 800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800 Review
Terry U.
Canada Canada

The best undersink RO I have purchased. Excellent customer service.

I have used other RO systems in the past; the Waterdrop unit is by far the best. The unit came well packaged and had plenty of clear instructions for an easy setup. Some complain of the noise when the unit is running; I don't see that as a problem. The customer service is absolutely excellent. My first unit had an issue with the faucet display flashing when it was running; additionally it would not properly display accurate RO TDS readings and filter status. They readily sent a new faucet but that did not resolve the issue. They sent a brand-new replacement unit; I installed it and the unit works perfectly. They were patient while I took my time installing the new unit and shipping the defective unit back to them. So far, I am extremely happy with the Waterdrop system. Excellent customer service goes a long way if technical issues arise. Great company and great product!

Bruce P.
Canada Canada

Incredibly happy with Waterdrop RO system

I'd been relying on those pitcher-base water filters, but wanted to take the leap to an RO based system after moving into my new place this past summer. After doing a lot of research, I settled on the Waterdrop G3P800 system because it seemed to hit the sweet spot of great design and filtration performance (I own a number of products that have won the Red Dot Design Award and trust me, you will never regret owning a product that has won the Red Dot). So even though the jG3P800 was pricey, I reasoned the cost couldn't compare to being able to drink and cook with water that is free of not only common contaminants like lead, but newer, harder-to-filter stuff like PFAS "forever chemicals" that many filters won't catch. As such, the main points about why I chose the Waterdrop 800GPD are: * 800 gallons per day capacity * Efficiency (only 1 cup of waste water for every 3 cups of purified water) * Informative indicators on both smart faucet and main filtration unit (see pictures) * Easy-to-replace filters with indicators that let you know when you need to do so * Tankless, on-demand system (no need to worry about bacterial build up in tanks) * Integrated, in-line UV light to **** any bacteria that might have bypassed filtration * Extensive 9-stage filtration, including PFAS "forever chemicals" * Sleek, futuristic, integrated design that looks great both above and below countertop (and leaves plenty of space under) So it was to my great dismay that when my package arrived, I discovered the smart RO faucet was actually missing in the box! I immediately contacted Waterdrop support, but in my anxiousness, I also ended up calling their toll free number. I was pleasantly surprised when someone actually answered the call in less than 5 minutes, as I was in a fairly sour mood given that a major component was missing on an expensive purchase. After explaining my situation, Waterdrop offered to send a replacement faucet out immediately. There was no back-and-forth—the agent on the phone just asked me to verify my shipping address and the missing part. Just two days later, I received a package with the smart RO faucet inside! The installation itself took a few hours (it helped that I already had a hole for the smart faucet pre-drilled into the countertop). I'm sure it would have gone faster had I had more experience with plumbing, but as long as you read the directions carefully and/or watch the installation videos, installing the RO system should be relatively straightforward. The most difficult part was drilling a 1/4" hole into the waste water pipe in order to connect the wastewater line from the Waterdrop filtration unit to. The best moment? When I plugged in the RO system to the under-counter power outlet and turned the 800 GPD on. It was lovely watching the displays light up and the RO system do its thing (you need to initially flush the system for 30 minutes, but the smart display on the faucet will let you know when the water is ready for drinking). I've now been using the Waterdrop RO system for almost 2 weeks now. I naturally use it for all drinking and cooking needs now, but given the extremely fast flow rate and the endurance of the 3 hefty filters, I am also using it to do a final rinse of all my dishes and flatware (I prefer to hand wash my dishes vs. running the dishwasher). I've also noticed my cats seem to love the taste and the purity of the water as well. In conclusion, I am completely delighted with my Waterdrop RO system. The hiccup with the missing smart faucet was annoying, but Waterdrop's responsive and helpful customer service really made up for the packaging oversight. Thus, without any reservations, I can heartily recommend the Waterdrop G3P800.

WaterdropCanada 800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800 ReviewWaterdropCanada 800 GPD Tankless RO System with UV Sterilizing Light - Waterdrop G3P800 Review